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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Magnus, Carl
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Publications (4/4 displayed)
- 2020Ramification of thermal expansion mismatch and phase transformation in TiC-particulate/SiC-matrix ceramic compositecitations
- 2020SPARK PLASMA SYNTHESIS AND TRIBOLOGY OF MAX PHASE AND CERAMIC COMPOSITES
- 2020The Lubricating Properties of Spark Plasma Sintered (SPS) Ti3SiC2 MAX Phase Compound and Compositecitations
- 2019Microstructural evolution and wear mechanism of Ti3AlC2 – Ti2AlC dual MAX phase composite consolidated by spark plasma sintering (SPS)citations
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article
The Lubricating Properties of Spark Plasma Sintered (SPS) Ti3SiC2 MAX Phase Compound and Composite
Abstract
<p>MAX phase composites Ti<sub>3</sub>SiC<sub>2</sub>–TiC<sub>x</sub> and Ti<sub>3</sub>SiC<sub>2</sub>–(TiC<sub>x</sub> + TiC) were synthesized and consolidated via a powder metallurgy spark plasma sintering (SPS) technique. The bulk compositions and microstructural evolution of the resulting SPS discs were analyzed using X-ray diffraction, Raman spectroscopy, and scanning electron microscopy (SEM) paired with an energy-dispersive spectroscopy (EDS) system. The tribological behavior of the synthesized discs was investigated at room temperature under dry sliding conditions using an Al<sub>2</sub>O<sub>3</sub> ball by employing a ball-on-disc tribometer configuration. Postmortem analyses of the worn surfaces showed that the Ti<sub>3</sub>SiC<sub>2</sub> MAX phase exhibited intrinsic self-lubricating behavior due to the evolution of easily sheared graphitic carbon at the sliding surface. The addition of stoichiometric TiC delayed the oxidation kinetics of Ti<sub>3</sub>SiC<sub>2</sub>, which favors the evolution of graphitic carbon in lieu of rutile and oxycarbide films. Thus, this work shows comprehensively the existence of an intrinsic self-lubricating behavior of Ti<sub>3</sub>SiC<sub>2</sub> and the important role of secondary-phase TiC in the Ti<sub>3</sub>SiC<sub>2</sub> matrix in its tribological behavior. The wear mechanisms in both composites are dominated by tribo-oxidation triggered by frictional heating. This is then followed by deformation-induced wear upon friction transition.</p>